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51317--9765-Differences in Fireside Corrosion Under Simulated Char and Lignite Conditions

Fireside corrosion is a serious concern for power generation industry since the harsh conditions lead to an accelerated corrosive attack of plant components. This study aims to investigate the fireside corrosion behavior of different metals under char and lignite conditions and with increased amount of chlorine and potassium. 

 

Product Number: 51317--9765-SG
ISBN: 9765 2017 CP
Author: Mathias Galetz
Publication Date: 2017
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Fireside corrosion is a serious concern for power generation industry since the harsh conditions lead to an accelerated corrosive attack of plant components. Especially superheater tubes are prone to this type of corrosion as they are subjected to ash deposits and also the corrosive atmosphere. While the demand for increased efficiency requires higher operating temperatures and thus leads to higher corrosion rates, the use of CO2-neutral fuels like biomass will introduce a higher amount of corrosive species into the system. This study therefore aims to investigate the fireside corrosion behavior of different metals under char and lignite conditions and with increased amount of chlorine and potassium. First results are presented that highlight the beneficial effect of high chromium content in the material.c

Key words: fireside corrosion, co-firing, metal recession, type II hot corrosion, mass loss test

Fireside corrosion is a serious concern for power generation industry since the harsh conditions lead to an accelerated corrosive attack of plant components. Especially superheater tubes are prone to this type of corrosion as they are subjected to ash deposits and also the corrosive atmosphere. While the demand for increased efficiency requires higher operating temperatures and thus leads to higher corrosion rates, the use of CO2-neutral fuels like biomass will introduce a higher amount of corrosive species into the system. This study therefore aims to investigate the fireside corrosion behavior of different metals under char and lignite conditions and with increased amount of chlorine and potassium. First results are presented that highlight the beneficial effect of high chromium content in the material.c

Key words: fireside corrosion, co-firing, metal recession, type II hot corrosion, mass loss test

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